Kiehl's Since 1851Ultra Pure High-Potency 5.0% Niacinamide Serum, 1 oz.

Name: Ultra Pure High-Potency 5.0% Niacinamide Serum, 1 oz.
Brand: Kiehl's Since 1851
Price: 40.00 USD
Availability: InStock
Rating: 4.60 (574 reviews)

$40.00

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A concentrated facial serum formulated with just 10 ingredients (aqua/water, niacinamide, glycerin, propanediol, methyl gluceth-20, hydroxyacetophenone, sodium hyaluronate, caprylyl glycol, carbomer and sodium hydroxide) to help visibly reduce oil and minimize the look of redness.

Product Features
- WHAT IT IS:
- A serum with 5% niacinamide
- WHAT IT DOES:
- Helps visibly reduce excess oil and minimize the look of redness
- INGREDIENT HIGHLIGHTS:
- Niacinamide, the form of vitamin B3 used within Kiehl's formulas, helps visibly brighten skin; when used in topical skincare formulas, niacinamide can also help balance skin's surface oil
- SKIN TYPES:
- For all skin types, including sensitive skin
- HOW TO USE:
- In the morning and evening, apply 2-3 drops to clean, dry skin
- Skin Hacks:
- Zone treat your face by applying the serum to areas prone to oiliness and breakouts and following with your favorite moisturizer where needed
- Layer with the Hyaluronic Acid Serum to hydrate and rebalance skin's moisture
- Layer with the Glycolic Acid Serum to gently exfoliate and improve texture
- RESULTS:
- After 1 week, skin feels soothed*
- Instantly reduces excess oil by 58%**
- Reduced blemishes in 1 week***
- *Based on reports by consumers in a 4-week study
- **Based on instrumental measurements in a 4-week clinical study
- ***Based on expert grading in a 4-week clinical study
Shipping & Returns
- This item qualifies for Free Shipping with minimum purchase! exclusions & details
- California and Minnesota customers call 1-800-289-6229 for Free Shipping information.
- For complete details, see our Shipping and Returns policies.
- Please call customer service for returns.

Ratings & Reviews

Here's what customers think

This serum is highly effective for a range of skin types and concerns.
Many users reported it helped control oil and shine, minimize pores, and improve skin texture and clarity.
The lightweight, non-irritating formula was praised for absorbing quickly.
Several saw benefits in fading dark spots, evening skin tone, and reducing redness and inflammation.
While a few found it slightly drying, most were very satisfied with its hydrating and smoothing effects.

AI-generated summary from 566 customers reviews.

4.6/5

574 star ratings, 566 reviews

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566 reviewssorted by Newest

brian_l49

2 months ago

Finally cleared my hormonal breakouts

The texture is super lightweight and disappears instantly with zero sticky residue. No fragrance, which I love. After three weeks, my redness is gone and my pores look noticeably refined.